Are there any interactions with medications?

The body breaks down chlorzoxazone (Parafon Forte, Paraflex) to get rid of it. Watercress might decrease how quickly the body breaks down chlorzoxazone (Parafon Forte, Paraflex). Taking watercress along with chlorzoxazone (Parafon Forte, Paraflex) might increase the effects and side effects of chlorzoxazone (Parafon Forte, Paraflex).

LithiumInteraction Rating:
Moderate Be cautious with this combination.Talk with your health provider.

Watercress might have an effect like a water pill or "diuretic." Taking watercress might decrease how well the body gets rid of lithium. This could increase how much lithium is in the body and result in serious side effects. Talk with your healthcare provider before using this product if you are taking lithium. Your lithium dose might need to be changed.

Warfarin (Coumadin)Interaction Rating:
Moderate Be cautious with this combination.Talk with your health provider.

Watercress contains large amounts of vitamin K. Vitamin K is used by the body to help blood clot. Warfarin (Coumadin) is used to slow blood clotting. By helping the blood clot, watercress might decrease the effectiveness of warfarin (Coumadin). Be sure to have your blood checked regularly. The dose of your warfarin (Coumadin) might need to be changed.

Dosing considerations for Watercress.

The appropriate dose of watercress depends on several factors such as the user's age, health, and several other conditions. At this time there is not enough scientific information to determine an appropriate range of doses for watercress. Keep in mind that natural products are not always necessarily safe and dosages can be important. Be sure to follow relevant directions on product labels and consult your pharmacist or physician or other healthcare professional before using.